get_channel_info — Information about the components of an image object.
get_channel_info(Object : : Request, Channel : Information)
The operator get_channel_info gives information about the components
of an image object. The following requests (Request) are
currently possible:
Output of the names of the procedures which initially created the image components (not the object).
Output of the type of image component
(byte, int1, int2, uint2 int4,
real, direction, cyclic, complex,
vector_field).
The component 0 is of type 'region' or 'xld'.
In the tuple Channel the numbers of the components about which
information is required are stated.
After carrying out get_channel_info, Information contains
a tuple of strings (one string per entry in Channel)
with the required information.
For a short description of the iconic objects that are available in HALCON see the introduction of chapter Object.
Object (input_object) object → object
Image object to be examined.
Request (input_control) string → (string)
Required information about object components.
Default: 'creator'
List of values: 'creator', 'type'
Channel (input_control) channel(-array) → (integer)
Components to be examined (0 for region/XLD).
Default: 0
Suggested values: 0, 1, 2, 3, 4, 5, 6, 7, 8
Information (output_control) string(-array) → (string)
Requested information.
If the parameters are correct the operator get_channel_info
returns the value 2 (
H_MSG_TRUE)
.
Otherwise an exception is raised.
Foundation